Typewriter



May 16, 1939.

K. D. EVANS TYPEWRITER Filed Sept. 20,1 1937 6 Sheets-Sheet l INVENT OR.KELLEY Q [fn/v5 www/ ATTORNEY 5 May 16, 1939.

K. D. EVANS TYPEWRITER Filed Sept'. 20, 1937 e sheets-smet 2 ha N lv. ma

INVENT OR. KELLEY /A/vs 'J1/ww@ @miam 0f/w12( ATTORNEYS K. D. EVANSTYPEWRITER May 16, 1939.

Filed Sept. 20, 1937 6 Sheets-Sheet I5 m WW1 k t W A. l

/IN .u| H w A .n H1 .W Q Mh1 S n mm Q% \ll/ Nm. MM.

May 16,

1939. K. D, EVANS 2,158,066

TYPEWRITER Filed Sept. 20, 1937 6 Sheets-Sheet 4 ATTORNEYS K. D. EVANSTYPEWRITER May 16, 1939.

6 Sheets-Sheet 6 Filed Sept. 20, 1957 -ATTORNEY5 Patented May 16., 1939UNITED STATE-S TYPEWRITER Kelley D. Evans, Hamilton, Ohio, assignor ofone-half to C. E. Hooven, Hamilton, Ohio Application September 20, 1997,Serial No. 164,729

7 Claims.

This invention relates to typewriters and particularly to typewriterswherein the type bars are swung to printing position by power drivenmeans so that the printing impressions will be uniform and independentof pressure applied by the operator to the keys.

The object of the invention iss to provide improved power-operatedmechanism for actuating the type bars and for performing otherfunctions, such as the carriage return, line and word spacing, and caseshift, which is efficient in operation and has to a high degree thefeatures of reliability and durability.

A further object is to accomplish the poweractuated movements through apower-operated actuator which is normally stationary but which isconnected to the power source and actuated through selection bydepression of the keys which are otherwise independent of the type bars.

The invention is applicable to or may be embodied in any standard formof typewriter or in connection with automatic typewriters, and in thisrespect the present invention is an improvement over my prior PatentsNos. 1,769,624, 1,769,625, and 1,769,626.

The invention may be briefly summarized as consisting in certain noveldetails of construction and combinations and arrangements of parts whichwill be described in the specification and set forth in the appendedclaims.

In the accompanying sheets of drawings in which I have shown anembodiment of the invention which operates with high efficiency,

Fig. 1 is a vertical sectional view of my improved typewriter takensubstantially on the irregular line I-I of Fig. 2;

Fig. 2 is a rear view of the same;

Fig. 3 is a View partly in end elevation and partly in section viewingcertain parts located beyond the section of Fig. 1;

Fig..4 is a sectional view showing on an enlarged scale the mechanism atthe lower righthand portion of Fig. 1;

Fig. 5 is a sectional view substantially along 7 the line 5--5 of Fig.4;

Fig. 6 is a sectional view substantially along the line 6-6 of Fig. 5;

Fig. 7 is a sectional view showing the mechanism at the righthand cornerof Fig. 1 on an enlarged scale, this View showing the key lever tiltedforwardly to the position to which it is moved by the depression of oneof the keys and showing the clutch controlling members in the positions`that they occupy at the instant that Fig. 8 is a view similar to Fig. 7showing the A actuator at the bottom of its power stroke and showing howit moves one of the slide levers from the tilted position of Fig. 7 toits lowermost position;

Fig. 9 is a plan view with parts broken away showing the mechanismsupported by the lower part of the frame or so-called sub-frame; and

Fig. 10 is a fragmentary plan view of the parts at the upper righthandcorner of Fig. 2.

Referring now to the drawings, my improved typewriter includes a frameI0 at the front of which is a keyboard corresponding to the keyboard ofan ordinary typewriter, several of the keys being shown at II. The keysare mounted on key levers I2 which are pivoted on a cross rod I3 carriedby a comb Il which is mounted on a sub-frame I5 which, in this instance,is

secured to the bottom of the frame I0 and supports a considerableportion of the power operated mechanism. This sub-frame, while in thisinstance is attached to and forms a support for the frame I0, may inpractice be an integral part of the frame III. The key levers I2 areextended downwardly, as shown at I,2a, below the rod I 3 on which theyare pivoted, and at their lower ends are extended inwardly as shown at I2b. The inward extensions I2b bear against the forward edges of theslide levers I 6 eachof which is individual to one of the keys of thekeyboard andis adapted to be swung inwardly when the key is depressedand then to be slid downwardly by the action of the power-drivenactuator, as will be explained subsequently. The upper ends of theseslide levers I6 are slotted, the slots receiving a fulcrum wire I1extending' across the slotsl of a comb I 8 which guides the upper endsof the slide levers. 'Ihe lower ends of the slide levers are providedwith forward extensions I6a which slide in the slots of a lower comb I9,both the combs I8 and I9 as well as the comb I4 being supported by thesub-frame. The slide levers are normally held in the vertical positionshown in Fig. 1 by springs 20 which extend upwardly and forwardly fromthe ends of the extensions IGa to a spring bar 20a secured to the lowerpart of comb I4. Beneath the lower ends of the slide levers I6 is alocking bar 2| the function of which will be explained presently. f

'I'he slide levers have rearward extensions IBb which are connected byadjustable links 22 to levers 23 which at their rear ends are pivoted ona fulcrum wire 24 like the key levers of an vwhich are fulcrumed on arod 26 extending across the main frame I0 and at their lower ends havepin and slot connections 29 with the levers 23, while at their upperends they have pin and slot connections with rearward extensions 26a ofthe type bars. The latter in turn are mounted to swing in the usualmanner in the slots of a segment 30 and are mounted on the usual fulcrumwire carried thereby. It will be understood that the type bars are notonly mounted in the customary manner but, as in the ordinary typewriter,when swung to printing position enter the usual guide indicated at 3I.'I'he segment 30 receives on its rear side the usual universal bar 32which functions in the customary manner to operate the escapement forspacing'the carriage through the usual or any suitable escapementmechanism which I have not here illustrated. I have shown the platen inconventional manner at 33 and alsoportions of the carriage frame at 34and a portion of the carriageat 35.

It was previously mentioned 'that' the slide levers I6 are connectedto'the levers 23 by adjustable links 22. While these adjustable linksmay be formed in diierent ways, in this instance the links are eachcomposed of two parts including an upper part 22a hooked onto the lever23 and provided with a threaded lower part screwed into a sleeve-likemember 22h the lower part of -which is slotted to receive the rearwardextension I6b of one of the slide levers I6. By adjusting the links 22the density of the printed impression may be varied.

It is to be noted that the key levers I2 have no direct mechanicalconnection with the levers 23 and therefore with the type bars 26, and,as will presently appear, the type bars. are swung to printing positionby a power driven actuator the movement of which is initiated and whichis caused to function to swing to printing position the type barcorresponding to one of the keys of the keyboard when the key isdepressed by the operator.

For thepurpose of actuating the slide levers I6 and the levers 23corresponding to all the type' bars as well as the slide levers forother special functions `to be referred to, I employ a power drivenactuator 36 in the form of a bar extending crosswise of the sub-frame I5 and mounted upon arms 31 of a rock shaft 38 which is journaled in thesides of the sub-frame I5. 'Ihis actuator, in contradistinction to theactuator of my prior patents referred to, is normally stationary and isadapted to swing through an arc, which is substantially vertical, fromthe normally stationary position shown in Fig. 4 to a lowermost positionshown in Fig. 8, and then return to its former position until the nextcycle is initiated. The power movement is started by the depression ofany one of the keys, which results in the swinging of the correspondingsliderlever I6 to the position shown in Fig. 7 so as to bring a shoulderI 6c on the lower part of theslide lever underneath the actuator 36,eachl of the slide levers being provided with one of these shoulders sothat when anyone of them is swung inwardly by the depression of thecorresponding key, the shoulder will be moved under the actuator, and,when the latter is swung downwardly, the slide lever will be pulleddownwardly so as to actuate the corresponding lever 23 and type bar 26or other parts which are to be power-actuated.

I will next describe the mechanism by which trolled. I prefer to employas a. source of power an electric motor 39 which in this instance lsmounted on the rear of the sub-frame I 5, the shaft of this motor beingprovided with two pulleys which drive two belts 40.and 4I the former ofwhich is utilized to impart movements to the actuator and the latter forline spacing and carriage return. The belts 40 and 4| run continuouslyso long as the motor is in operation, the belt 40`extending from thepulley on the'motor shaft forwardly and around a normally loose pulley42 of a clutch which is designated as a whole by the reference character43. 'Ihe pulley 42 normally runs loosely on an inner hub 44 which isvmounted on a' shaft 45 supported in bearings 46 on the lower part ofthe s'ub-frame and provided at one end with a crank disk 41 which isconnected by a link 43 to an yarm '4I fixed to the rock shaft 38. Inthis instance the pulley 42 is adapted to engage and to be disengagedfrom the hub 44 by a roller 5 9 which is adapted to move in a taperednotch 5I formed in the periphery of the hub 44 being acted upon by oneor more springs `52 located in recesses ofthe hub so that when theroller is released they will move the roller into the narrower part ofthe notch and thus cause the clutch to be engaged. The roller projectsbeyond opposite faces of'the hub 44 and is provided at both ends withbuttons 53 (Fig. 5) which are adapted to be engaged by the actuator isshifted and its movements conthe fingers of a clutch yoke 54 and=heldbythe lower part of the sub-frame I5, and it is provided with aforwardly extending arm 55. The yoke^54 is normally maintained in clutchdisengaging position by a spring 56. When it is in this tion, itsforward end which is on a bevelis en. gaged by a pin 51 (Fig. 4) on apawl lil normally pressed by a spring 59 against a pin 60 4carried by apawl lever 6I which is connected by a link 52 to a universal trip bar 63which extends across the lower rear ends of the slide levers I6 andisattached at its ends to upstanding arms 64 pivoted on the sides of thesub-frame I5. A normally presses the universal trip bar the lower endsof the slide levers shown in Fig. 4.

The arrangement is such that when any one of the keys is depressed thelower end of the corresponding key lever I2 is swung inwardly rockingthe corresponding slide lever inwardly about the fulcrum wire I1 to theposition shown in Fig. 7. 'I'his simultaneously accomplishes twothingsit moves the shoulder I6c under the actuator 36 and it swingstheuniversal trip bar rearwardly tothe position shown in Fig. 7 so that thelink 62 will rock the lever 6I and cause the pin 51 'on the pawl 58 tobe pressed against the beveled end oi' arm 55 and thus rock thearm andthe clutch yoke 54 about their pivotal axis, causing the arms of theyoke to move under the buttons 53, thus releasing the roller 50 andallowing the clutch to become engaged by reason of the fact that thesprings 52 move the roller 50 forwardly into the narrower part of thenotch 5I so as to cause the rotating pulley 42 to be temporarily lliPPedto 63 against I6 in the manner DOSI- the hub 44. The clutch makes onecomplete revolution and is then disengaged, and during this revolutionthe actuator has been swung downward or given its power stroke whichmoves the slide lever downwardly and then is returned and stops at itsuppermost position shown in Fig. 4. The disengagement of the clutchafter the hub 44 has been given one revolution is accomplished by reasonof the fact that when the pin 51 elevates the forward end of the arm 55so as to rock the rear end of the yoke 54 downwardly and thereby releasethe buttons 53 and roller 50, the

pin 51 rides under the point at the lower side of the beveled end of thearm 55, thus permitting the clutch yoke 54 to immediately rock back toits previous position such that it will again reengage the buttons 53 onthe completion of the revolution of the hub and again disengage theclutch.

The spring 56 returns the clutch yoke to its previous position to againdisengage the clutch and at the same time the spring 65 returns theuniversal trip bar to its former position shown in Fig. 4, the spring 20meanwhile having disengaged the shoulder |6c from the under side of theactuator and returned the slide lever to its former position. It waspreviously mentioned that a locking bar 2| is provided beneath the lowerends of the slide levers. I t will be observed that when the slidelevers are moved downwardly by the actuator from the position shown inFig. 1, the lower ends of the slide levers pass below the top of thelocking bar 2i and, in fact, engage the rear surface thereof, as shownin Fig. 8. Accordingly, this locking bar prevents the shoulder 16e ofthe slide lever from sliding beneath the actuator until after the powerstroke of the actuator is completed. On the return stroke of theactuator, the slide lever is pulled upwardly and restored to itsprevious position by the associated spring 20, and in so doing the slidelever is pulled upwardly so that the lower end thereof is over the topsurface of the locking bar, as shown in Fig. 1.

It was previously stated that as soon as the clutch yoke is rocked so asto cause the clutch to be engaged by the pin 51 passing under the pointat the lower end of the bevel of the arm 55, the clutch is engaged andimmediately thereafter the clutch yoke comes back to its formerposition, i. e., to the position to again disengagie the clutch when thehub has made one revolution. On the return of the universal trip bar 63to its former position, it restores the link 62 and lever 6l to theirformer positions, and in doing so the pin 51 does not again rock theclutch yoke but yields and passes back under the point and again isrestored against the beveled end of arm 55. On the return movement ofthe trip bar and consequently on the return movement of the p in 51, thelatter does not again rock the yoke 54 to clutch engaging position forthe reason that the pin 51 is on the spring-pressed pawl 58 and duringits return movement the spring yields and allows the pin 51 to passunder the beveled end of arm 55.

At this point I wish to call attention to the fact that since the clutchyoke is restored to its clutch disengaging position immediately afterthe clutch is engaged in the manner just stated, the clutch will beengaged only during one revolution and is then disengaged regardless ofwhether the operator quickly releases the key or keeps` typewriting isaccomplished by the type bars being swung to printing position throughthe action of the actuator which functions in the manner above explainedeach time that one of the keys is depressed. It will be understood thatas the type bar is swung to printing position it actuates the universalbar which actuates the escapement to accomplish the letter spacing. Forword spacing, I employ the Ausual spacer bar 66 (Fig. 1) mounted on twolevers 51 at opposite ends of the keyboard and xed to a shaft 68 towhich is attached a downwardly and rearwardly extending arm 69 the lowerend of which engages one of the slide levers I6 the same as the lowerends of the key levers l2. The slide lever associated with the arm 69functions the same as the slide levers associated with the keys of thekeyboard, but in this instance it is connected by one of the adjustablelinks to an arm 10 (Fig. 1) fixed to a cross shaft 1I to which isattached a rearwardly and upwardly extending arm 12 connected by a lever13 which in turn is connected to .a rearward extension of the universalbar 32.

Thus, when the space bar 56 is depressed by the operator, the actuator36 functions to actuate the universal bar- 32 so as to accomplish theword- A spacing but without moving a type bar as is the case when any ofthe keys corresponding to the printing characters are depressed.

As is well known, it is customary to case-shift, i. e., to shift fromthe lower case letters to the upper case and vice versa either bychanging the position of the platen or by changing the position of thesegment to which the type bars are connected, and, in the ordinarytypewriter, the case-shift is accomplished by a shift key. I provide ashift key in the keyboard but in this instance thecase-shift isaccomplished by the movement of the actuator the same as when thetypewriting is done by pressing the character keys. I provide for thispurpose a shift key which is designated i i a in Fig. 3. This shift keyis connected to a key lever I2C which is mounted on the fulcrum wire i3the same as the key levers I2. This key lever I2c has a downwardextension and is associated with one of the slide levers I6 similar inall respects to the slide levers associated with the character keys.However, in this instance the slide lever, as shown in Fig. 3, isconnected by one of the adjustable links 22 to a lever 14 which ismounted on the fulcrum wire 24 on which the levers 23 are fulcrumed.This lever 14 has an upward extension 14a which effects the shiftingeither by shifting the platen or by shifting the segment, but in thisinstance the platen, the upward extension 14a engaging the rear side ofthe lift frame 15 and this in turn lifting the platen upon the actuationof the lever 14 by the actuator. As is customary in typewriters whereinthe shift is accomplished by shifting the platen, the lift frame 15 hasa lift rail 16 which is engaged by a roller 11 of the carriage a portionof which is shown at 18. In this same figure as Awell as in Fig. 1 areshown the way rod 19 and the front rod 80 on which the carriage'frame issupported and slides. As is customary when the shift is made for uppercase letters, the platen or segment remains in its shifted positionuntil theshift lock release key is depressed. I contemplate using theordinary shift lock release key which functions in the c'ustomarymanner.

Thus it will be seen that by depressing the character keys thetypewriting is accomplished by the actuator accompanied by the usualletter spacing, and that the word spacing is accom- For the carriagereturn and linespacing operations I employ the same motor 39 as is usedin swinging the type bars to printing position and for the case shiftand word spacing. The motor shaft, as previously stated, drives notonly-'the belt 40 but` also the belt 4|. The latter belt rotates apulley on a short shaft 82 mounted on the rear of the sub-frame. vThisshaft 82 is connected by suitable reduction gearing, in'this instanceworm gearing 83, to a vertical shaft 84 supported at the rear of themachine and extending upwardly to the upper rear portion thereof whereit is designed to act as a drive for a special f clutch which whenengaged by the depression of a key line-spaces and returns the carriage.

To effect the line spacing and carriage return operations, I utilize arail 85 supported at its ends in brackets 86 mounted at opposite ends ofthe rear corners of the carriage frame 34, as best shown in Fig. 2. Thisrail is not fixed to the brackets 86 but has a limited endwise movementtherein by reason of a pin and slot connection indicated at 81 with eachof the brackets 86. The rail 85 is of course normally stationary but isadapted to be moved endwise first relative to and then .with thecarriage frame by being pinched between two rollers 88 and 89 at leastthe peripheries of which are preferably of soft rubber. The roller 88 isfixed to the upper end of the vertical shaft 84 which rotates constantlyso long as the motor 39 is operated. 'I'he roller 89 is mounted forrocking movement toward and from the roller 88 on a short lever 90pivoted at 9| on a bracket 92 which supports the upper end of shaft 84,the bracket 92 being secured to the rear central portion of the mainframe l0, as clearly shown in Fig. 2. Rotary motion is transmitted fromthe shaft 84 to the roller 99 by two gears consisting of a gear 93 xedto the shaft 84 just beneath the roller 88 and a gear 94 carried by thelever just beneath the roller 89. The gear 94 and the roller 89 are on ashort stud and rotate together on the lever 90.

When the parts are in the position shown in Fig. 1, the roller 89 is notin driving relation with the rail 85 but nevertheless'the gears aresuiciently inmesh so that both the gear 94 and the roller 89 arenormally rotated idly. The lever 90 is adapted to be swung from thedisengaged position shown in Fig. 1 to the engaged position in operativerelation to the rail 85 by a toggle consisting of two links 95 and 96one connected to a depending portion of the bracket 92 and the otherconnected tothe lower end of the lever 90, a's clearly shown in Fig. 1.As the toggle is straightened, and in practice moved upwardly slightlypast the center, the lever 90 is swung to vertical position bringing thevgears into full mesh an'd swinging the roller 89 against the rail 85which is then pinched sufliciently tightly between the two rollers tocause it to move endwise, as will be explained. The toggle is adapted tobe straightened so as to bring the gears 93 and 94 into full mesh andthe rollers actuator.

. is initiated by the depression of a special key of the keyboard whichin precisely the same manner as before rocks one of the slide levers I6,resulting as before in the tripping of the clutch followed by thedownward power stroke of the 'I'he particular slide lever thus'actuated,instead of operating one of the levers 23, rocks a bell crank 91pivotally mounted. at 98 on the sub-frame (see particularly Fig. 1). Theend of one of the arms of the bell crank 91 is located beneath theextension |6b of the slide lever in question, and when the slide leveris depressed by the actuator, the other arm of the bell crank movesrearwardly a rod 99 which is connected to an arm |00 on a rock shaft|00a, the latter having a second arm |00b (Figs. 1 and 9) which isconnected to and adapted to shift a vertical rod |0| connected to thetoggle arms and 96.

By the depression of one of the keys by the operator, the rollers 88 and89 are thus brought into driving relation with the rail 85 which ismoved in an endwise direction. By reason of the pin and slot connectionbetween the rail 85 and the carriage frame, the rail first movesrelative to the carriage frame substantially the' length of the slots ofthe pin and slot connection between the rail and the brackets 86. Inorder that this movement may be effective to turn the platen for theline spacing, I attach to the righthand end of `the rail as the same isviewedin Fig. 2 an arm |02 which is journaled in a bracket |03 formingan extension of the adjacent bracket 86. This arm |02 is on a rock shaft|04 in the form of an upstanding barrel which is journaled to the end ofthe bracket |03 and has at its upper end an arm |05 which is connectedby a link |06 (see Figs. 1 and 10) to the ordinary line space plunger|01 (Fig. l) which carries a pawl |08 adapted to engage a ratchet |09 onthe end of the platen shaft. This plunger |01 is adapted to be operatedin the usual manner by the line space lever at the front corner of themain frame and is not here shown.

As soon as the short movement of the rail relative to the carriage frameis completed and the line spacing accomplished, as just stated, thepinsf reach the ends of the slots, whereupon the further endwisemovement of the rail 85 causes the carriage return. When the returnmovement is completed, a projection ||0 (Fig. 2) engages an adjustablestop indicated at in Fig. 2 on the front rod 80. 'Ihe front rod isnormally fixed in the typewriter frame, but, in accordance with thepresent invention, has a special mounting which permits it to have aslight endwise movement when the adjustable stop is engaged by theprojection l| |0 of the carriage frame which movement is opposed by theaction of a spring ||3, in this instance at the lefthand end of the rodwhen viewed from the front of the typewriter. The purpose of thisendwise movement of the front rod 80 is to break the toggle composed ofthe links 95 and 96 and disengage the clutch composed of the rollers 88and 89 in so far as their driving relationship with the rail 95 isconcerned. To accomplish this, I mount on a bracket ||4 secured to therighthand end of the main frame |0 a bell crank 5 the upper end of oneof the arms of which is in line with the front rod 80 while the otherarm extends inwardly substantially horizontally and is' connected to theupper end of a substantially vertical rod H6 the lower portion of whichpasses through the horizontal arm of the bell crank 91 which waspreviously lowered by the actuator and the slide lever to initiate thecarriage return. At the lower end of the rod H6 is a shoulder preferablyin the form of an adjustable nut so arranged that when the carriagereturn is completed, causing the endwise movement of the front rod 80,the rocking of the bell crank H and the upward movement of the rod IIBrestores the bell crank 91 to its previous position, breaking the togglecomposed of the links 85 and 96 so as to swing the roller 89 to theposition shown in Fig. 1 and stop the driving action on the rail.

'I'he depression of the carriage return key results in the line spacingmovement given to the platen followed `by the return of the carriage,and these two operations are accomplished one after the other when thecarriage is at any position other than at its righthand position.However, the mechanism which I have providedadmits of further linespacing when the carriage is at its righthandposition by the furtherdepression of the carriage return key, that is to say, after thecarriage is returned the operator can give as many additional spacemovements to the platen as desired by depressing the carriage return keyone or more times. These spacing movements are imparted to the platen bythe power mechanism, but since the carriage is now in its righthandposition, the effect of depressing the key is simply to cause the powermechanism tostraighten the toggle which moves the rail to the extentpermitted by the pin and slot supporting connections for the rail 85,resulting in the line space movements only. It might be mentioned atthis point that upon the breaking of the toggle and the spreading of therollers 88, 89 the rail 85 moves to the right a distance permitted bythelength of the slots. This return movement is caused by the spring lillawhich is connected to and normally returns the line space plunger |01 toits normal position. This return of the rail 85 makes it possible toimpart subsequent line spacing movements by the depression of thecarriage return key after the carriage'has returned to its right-handposition. It might be stated at this point also that the spring H3cushions the blow when the carriage reaches its return position and itserves also to give a slight forward movement to the carriage after itsreturn movement is completed, resulting in a slight return movement ofthe bell crank H5 and a downward movement of the rod IIB (by its ownweight), thus lowering it to the position shown in Fig. l and permittingsubsequent operation whether simply for line spacing purposes or forboth line spacing and carriage return.

In concluding the description of this part of the mechanism, it might bestated that because the mechanism by which the line spacing isaccomplished through the actuation of the power mechanism -is connectedto the ordinary line space plunger, it is possible for the operator toeffect line spacing in the usual manner by operating the customary linespace lever.

The operation is as follows: When the operator is ready to dotypewriting with the improved typewriter described above, the motor 39is started by closing a conveniently located switch. The

operator will then do the typewriting by operating the keys as in anordinary typewriter. Each time that a key is depressed the associatedslide leveris swung rearwardly, causing the universal trip bar to beswung rearwardly, resulting in the engagement of the clutch which thenmakes one revolution and is again disengaged, the actuator meanwhilehaving been given its power stroke and returned to its previousposition. This movement of the actuator in the manner already explainedmoves the type bar to printing position which is followed by the letterspacing through the usual escapement mechanism. It might be here statedthat each cycle of movement of the clutch and the clutch controllingparts and of the actuator is completed in a sufllciently short space oftime that the machine is capable of being operated by the most rapidtypist.

The word spacing is accomplished by the depression of the space barwhich tilts one of the slide levers and causes the actuator to move theY universal bar in the same manner as it is moved .for letter spacing.

When the line is completed, the operator depresses the carriage returnkey and this results in the closing of the toggle composed of the links95 and 86 and the movement of the rail 85 to first impart a line spacingmovement to the platen and then return the carriage to its righthandposition until the adjustable stop is reached, whereupon the front rod88 is moved endwise sumciently to operate the bell crank and linkagewhich again breaks` the toggle. With the carriage in its righthandposition, as many additional line spacing 'movements may be imparted tothe platen as desired each being poweroperated in the manner previouslyexplained.

When the operator desires to make a case shift, the shift key isdepressed, whereupon the shift is accomplished by the power mechanismeither by changing the position of the platen or chang-ing the positionof the type bar segment.

'I'hus it will be seen that the operator has simply to touch lightly thevarious keys and the space bar to perform al1 of the functions necessaryfor typewriting purposes, resulting in the typewritten matter being ofuniform appearance throughout and of course reducing materially themuscular eort and manual movements necessary to cause the variousfunctions or operations to be performed under the power of the motor.The movement of the carriage for tabulating and indenting purposes andthe manipulation of the ribbon are preferably accomplished manually asin the ordinary typewriter, all other operations, however, beingeffected by the power mechanism controlled or initiated by the slightmovement of the keys or thespace bar.

While I have Kshown the preferred construction, I do not desire to beconfined to the precise details of arrangement or construction but aimin my claims to cover all modifications which do not involve a departurefrom the spirit and scope of the invention.

Having thus described my invention, I claim:

1. In a typewriter, a frame, a keyboard, type bars, power means forrswinging the type bars to printing position including a normallystationary actuator, a normally disengaged clutch, members associatedwith the keys and connected with the type bars and adapted to be shiftedto a position to be engaged by the actuator, and means operated by anyof said members on the said clutch.

2. In a typewriter, a frame, a keyboard, type bars, power means foractuating the type bars comprising a normally stationary actuator, anormally disengaged clutch, members associated with the keys andmechanically connected to the type bars, said members being adapted tobe vshifted by the depression of the 'associated keys to a position tobe engaged by the actuator, and a clutch tripping member adapted to beshifted by the movement of. any of said members following the depressionof the corresponding keys.

3. In a typewriter, a frame, a keyboard, a normally stationaryintermittently movable actuator for swinging the type bars to printingposition, means adapted to be actuated by the depression of the keys forestablishing connection between the actuator and the type bars, powermeans including a normally disengaged clutch for operating the actuator,and means operated.

by said rst named means for causing the clutch to be engaged and thendisengaged after one revolution.

4. In a typewriter, a frame, a keyboard, type bars, a power drivenactuator for swinging the type bars to printing position, membersconnected to the type bars and associated with the different keys of thekeyboard, means including al normally disengaged clutch for swinging theactuator, and a trip bar for controlling said clutch and adapted to beactuated by any of said members.

5. In a typewriter, a frame, a keyboard, type bars, slide leversassociated with thekeys of the keyboard and mechanically connected tothe type bars, an intermittently movable actuator for giving slidingmovements tol said slide levers,

means operated by depression of the keys of the keyboard for giving saidslide levers tilting movements to a positionto be engaged by theactuator, power means for imparting operative movementsto said actuatorand including a normally disengaged clutch, and means operated by saidtilting movements of the slide levers for controlling the clutch.

6. In a typewriter, a frame, a keyboard, type bars, slide leversassociated with the keys of the keyboard and mechanically connected tothe type bars, an intermittently movable actuator for giving slidingmovements to said slide levers, means operated by depression of the keysof the keyboard for giving said slide levers tilting movements to aposition to be engaged by the actuator, power means for impartingoperative movements to said actuator and including a normally disengagedclutch, and means operated by said tilting movements of. the slidelevers for controlling the clutch, the connection between each type barand its associated slide lever including adjustable means by which thetype impression may be varied.

7. In a typewriter, a frame, a keyboard, type bars, slide leversassociated with the keys of thekeyboard and mechanically connected tothe type bars, an intermittently movable actuator for givingA slidingmovements to said slide levers, means operated by depression of the keysof the keyboard for giving said slide levers tilting movements to aposition to be engaged by the actuator, power means for impartingoperative movements to said actuator and including a normally disengagedclutch, and a trip bar for the clutch adjacent said slide levers andarranged to be shifted by said tilting movements thereof.

KELLEY D. EVANS..

